Log Message:
Update finance/magento to 1.9.2.2.

This release fixes several vulnerabilities and security issues.

See release notes for details:

  http://merch.docs.magento.com/ce/user_guide/magento/release-notes-ce-1.9.2.2.html

The patch bundle technical notes explain how the patches affect
existing installations:

  http://magento.com/security/patches/supee-6788-technical-details